For most of us living our lives on this planet we call Earth, the fact that we will one day be dead and gone is an abstract concept, something we intellectually know but can’t fully visualize or comprehend. Vikings QB Kirk Cousins has solved this problem with a collection of rocks.

Cousins posted a photo on Monday of a tower of stones stacked on his front porch—720 total, of which he’ll remove one for every month he lives until he turns 90. He also referenced a Bible verse that reads, “The life of mortals is like grass, they flourish like a flower of the field; the wind blows over it and it is gone, and its place remembers it no more,” which is surprisingly profound coming from a guy who’s also on the record as loving the band Creed.

If any NFL player was going to have an existential crisis while still in his 20s, it makes sense that it’s the one who’s only ever played for the Redskins and Vikings.